text: /*
   * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  #ifndef OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP
  #define OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP
  
  //
  // Page Allocation Tiers
  // ---------------------
  //
  //  Page Type     Page Size     Object Size Limit     Object Alignment
  //  ------------------------------------------------------------------
  //  Small         2M            <= 265K               <MinObjAlignmentInBytes>
  //  Medium        32M           <= 4M                 4K
  //  Large         X*M           > 4M                  2M
  //  ------------------------------------------------------------------
  //
  const size_t ZPlatformGranuleSizeShift      = 21; // 2MB
  const size_t ZPlatformMaxHeapSizeShift      = 46; // 16TB
  const size_t ZPlatformNMethodDisarmedOffset = 4;
  const size_t ZPlatformCacheLineSize         = 64;
  
  uintptr_t    ZPlatformAddressSpaceStart();
  uintptr_t    ZPlatformAddressSpaceEnd();
  uintptr_t    ZPlatformAddressReservedStart();
  uintptr_t    ZPlatformAddressReservedEnd();
  uintptr_t    ZPlatformAddressBase();
  size_t       ZPlatformAddressOffsetBits();
  size_t       ZPlatformAddressMetadataShift();
  
  #endif // OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP
  